Hello; Yes there are some service dogs trained or by their nature used to do specific jobs. I also can see some cases where a dog is doing right when it bites or attacks. Home invasion where the dog attacks an intruder. Military service dogs.Believe it or not, not everyone lives in a grid neighborhood with neighbors close by and not all dogs are companion animals; some are used for hunting, herding and guarding. There are many powerful breeds of dogs that require special care and the same rules would apply to this dog....
In the nearby town I looked at a house. Next door in a fenced lot were several dobermans. Owner had a very sturdy fence six feet or more high.
My next door neighbors on one side are a small herd of black angus cattle. I give them nick names like big mack, rib eye, beef stew and such. They smell a lot better than the sheep that use to be my neighbors on that side.